1/* linux/arch/arm/plat-s3c24xx/simtec-audio.c
2 *
3 * Copyright (c) 2009 Simtec Electronics
4 *	http://armlinux.simtec.co.uk/
5 *	Ben Dooks <ben@simtec.co.uk>
6 *
7 * Audio setup for various Simtec S3C24XX implementations
8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License version 2 as
11 * published by the Free Software Foundation.
12*/
13
14#include <linux/kernel.h>
15#include <linux/interrupt.h>
16#include <linux/init.h>
17#include <linux/device.h>
18#include <linux/io.h>
19
20#include <mach/hardware.h>
21#include <mach/regs-gpio.h>
22
23#include <linux/platform_data/asoc-s3c24xx_simtec.h>
24#include <plat/devs.h>
25
26#include "bast.h"
27#include "simtec.h"
28
29/* platform ops for audio */
30
31static void simtec_audio_startup_lrroute(void)
32{
33	unsigned int tmp;
34	unsigned long flags;
35
36	local_irq_save(flags);
37
38	tmp = __raw_readb(BAST_VA_CTRL1);
39	tmp &= ~BAST_CPLD_CTRL1_LRMASK;
40	tmp |= BAST_CPLD_CTRL1_LRCDAC;
41	__raw_writeb(tmp, BAST_VA_CTRL1);
42
43	local_irq_restore(flags);
44}
45
46static struct s3c24xx_audio_simtec_pdata simtec_audio_platdata;
47static char our_name[32];
48
49static struct platform_device simtec_audio_dev = {
50	.name	= our_name,
51	.id	= -1,
52	.dev	= {
53		.parent		= &s3c_device_iis.dev,
54		.platform_data	= &simtec_audio_platdata,
55	},
56};
57
58int __init simtec_audio_add(const char *name, bool has_lr_routing,
59			    struct s3c24xx_audio_simtec_pdata *spd)
60{
61	if (!name)
62		name = "tlv320aic23";
63
64	snprintf(our_name, sizeof(our_name)-1, "s3c24xx-simtec-%s", name);
65
66	/* copy platform data so the source can be __initdata */
67	if (spd)
68		simtec_audio_platdata = *spd;
69
70	if (has_lr_routing)
71		simtec_audio_platdata.startup = simtec_audio_startup_lrroute;
72
73	platform_device_register(&s3c_device_iis);
74	platform_device_register(&simtec_audio_dev);
75	return 0;
76}
77